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Abstract:

The center of the our Galaxy is a region where very energetic phenomena take place. In particular, powerful cosmic ray sources can be located in that region. The cosmic rays accelerated in these sources may interact with ambient protons and/or low energy photons producing gamma rays and neutrinos. The observation of these two types of secondary particles can be very useful for the identification of the cosmic ray sources and for the understanding of the physical processes occurring during acceleration. Motivated by the excess in the neutrino spectrum recently reported by the IceCube Collaboration, we study in detail the shape of the gamma ray and neutrino spectra originating from the interaction of cosmic ray protons with ambient protons for sources located in the Galactic Center region. We consider different models for proton acceleration and study the impact on the gamma ray and neutrino spectra. We also discuss the possibility to constrain and even identify a particular neutrino source by using the information given by the gamma ray spectrum, taking advantage of the modification of the spectral shape caused by the interaction of the gamma rays with the photons of the radiation field present in the interstellar medium, which strongly depends on the source distance. © 2014 American Physical Society.

Registro:

Documento: Artículo
Título:Gamma rays and neutrinos from a cosmic ray source in the Galactic Center region
Autor:Supanitsky, A.D.
Filiación:Instituto de Astronomía y Física Del Espacio (IAFE), CONICET-UBA, CC 67, Suc. 28, C1428ZAA Buenos Aires, Argentina
Año:2014
Volumen:89
Número:2
DOI: http://dx.doi.org/10.1103/PhysRevD.89.023501
Título revista:Physical Review D - Particles, Fields, Gravitation and Cosmology
Título revista abreviado:Phys Rev D Part Fields Gravit Cosmol
ISSN:15507998
CODEN:PRVDA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v89_n2_p_Supanitsky

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Citas:

---------- APA ----------
(2014) . Gamma rays and neutrinos from a cosmic ray source in the Galactic Center region. Physical Review D - Particles, Fields, Gravitation and Cosmology, 89(2).
http://dx.doi.org/10.1103/PhysRevD.89.023501
---------- CHICAGO ----------
Supanitsky, A.D. "Gamma rays and neutrinos from a cosmic ray source in the Galactic Center region" . Physical Review D - Particles, Fields, Gravitation and Cosmology 89, no. 2 (2014).
http://dx.doi.org/10.1103/PhysRevD.89.023501
---------- MLA ----------
Supanitsky, A.D. "Gamma rays and neutrinos from a cosmic ray source in the Galactic Center region" . Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 89, no. 2, 2014.
http://dx.doi.org/10.1103/PhysRevD.89.023501
---------- VANCOUVER ----------
Supanitsky, A.D. Gamma rays and neutrinos from a cosmic ray source in the Galactic Center region. Phys Rev D Part Fields Gravit Cosmol. 2014;89(2).
http://dx.doi.org/10.1103/PhysRevD.89.023501